IC693CHS392K GE 10-Slot Expansion I/O Baseplate

When I/O Outgrows the Main Rack: The IC693CHS392K Solution

A control engineer faces a familiar problem: the existing Series 90-30 main rack is full, yet additional discrete and analog points are required. Adding a second CPU is costly and complex. The IC693CHS392K expansion I/O baseplate solves this by extending the system bus to a remote panel. Specifically, this 10-slot unit accepts I/O modules and communicates via a 25-pin female expansion connector. Consequently, the engineer can add up to ten modules without replacing the CPU or rewriting logic.

IC693CHS392K Technical Specifications

The following parameters are verified from the manufacturer's data. These values define the baseplate's electrical and mechanical limits.

• Baseplate Type: Expansion I/O base
• Number of Slots: 10 I/O slots
• Expansion Connector: 25-pin female
• Max Expansion Distance: Up to 50 feet (15 m)
• Mounting: Panel mount
• Series: Series 90-30
• Original Manufacturer: GE Fanuc / GE Intelligent Platforms
• Current Owner: Emerson

Notably, the 25-pin connector ensures a secure, keyed interface. Meanwhile, the 15 m maximum distance allows flexible panel layout. However, this distance assumes proper cable routing and shielding. For exact cable specifications, refer to the official datasheet.

Integrating the IC693CHS392K into Series 90-30 Systems

This baseplate functions as a slave expansion unit. It connects to a Series 90-30 CPU baseplate via a compatible expansion cable. The 25-pin female connector on the IC693CHS392K mates with the cable's male end. After that, the CPU recognizes the added slots as part of the same logical rack. Therefore, existing I/O addresses remain consistent, and no firmware changes are needed.

Because the unit is panel mount, it requires a flat, vibration-free surface. Additionally, maintain at least 2 inches of clearance for airflow. The baseplate does not include a power supply; it draws power from the CPU baseplate through the expansion cable. Consequently, total power budget must be calculated for all modules across both racks.

Reliability and Maintenance Considerations

The IC693CHS392K has no moving parts, so wear is minimal. However, the 25-pin connector is a potential failure point if exposed to moisture or contaminants. Therefore, inspect the connector periodically for corrosion or bent pins. Also, verify that the expansion cable is securely fastened. In high-vibration environments, use strain relief. Because the product is discontinued, spare units may become scarce. Thus, proactive replacement planning is advisable.

This part belongs to a discontinued platform (GE Series 90-30), superseded by PACSystems RX3i (IC695 series). We stock remaining new and refurbished units.